code: def _get_random_params():
      while True:
          a = random.randint(2, 6)
          b = random.randint(2, 6)
  
          if a != b:
              break
  
      if a > b:
          n, k = a, b
      else:
          n, k = b, a
  
      return n, k
  
imports: import random
  import pytest
  from geomstats.geometry.full_rank_matrices import FullRankMatrices
  from geomstats.geometry.matrices import MatricesMetric
  from geomstats.geometry.rank_k_psd_matrices import BuresWassersteinBundle, PSDBuresWassersteinMetric, PSDMatrices, RankKPSDMatrices
  from geomstats.test.parametrizers import DataBasedParametrizer
  from geomstats.test.random import RankKPSDMatricesRandomDataGenerator
  from geomstats.test_cases.geometry.fiber_bundle import FiberBundleTestCase
  from geomstats.test_cases.geometry.manifold import ManifoldTestCase
  from geomstats.test_cases.geometry.mixins import ProjectionTestCaseMixins
  from geomstats.test_cases.geometry.quotient_metric import QuotientMetricTestCase
  from .data.rank_k_psd_matrices import BuresWassersteinBundleTestData, PSD22BuresWassersteinMetricTestData, PSD33BuresWassersteinMetricTestData, PSDBuresWassersteinMetricTestData, RankKPSDMatrices32TestData, RankKPSDMatricesTestData
label_desc: Use image node_id 1 for calling a global function with example usage: _get_random_params() and returns: n,  k